Rust Requires Chilkat v11.0.0+
Rust
Generate a CSR containing an Extension Request
See more CSR Examples
Demonstrates how to generate a CSR containing a 1.2.840.113549.1.9.14 extensionRequest.Chilkat Rust Downloads
// This requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// This example will generate a secp256r1 ECDSA key for the CSR.
let ecc = chilkat::Ecc::new();
let prng = chilkat::Prng::new();
let priv_key = chilkat::PrivateKey::new();
if ecc.gen_key("secp256r1", &prng, &priv_key).is_err() {
println!("Failed to generate a new ECDSA private key.");
return;
}
let csr = chilkat::Csr::new();
// Add common CSR fields:
csr.set_common_name("mysubdomain.mydomain.com");
csr.set_country("GB");
csr.set_state("Yorks");
csr.set_locality("York");
csr.set_company("Internet Widgits Pty Ltd");
csr.set_email_address("support@mydomain.com");
// Add the following 1.2.840.113549.1.9.14 extensionRequest
// Note: The easiest way to know the content and format of the XML to be added is to examine
// a pre-existing CSR with the same desired extensionRequest. You can use Chilkat to
// get the extensionRequest from an existing CSR.
// Here is a sample extension request:
// <?xml version="1.0" encoding="utf-8"?>
// <set>
// <sequence>
// <sequence>
// <oid>1.3.6.1.4.1.311.20.2</oid>
// <asnOctets>
// <printable>ZATCA-Code-Signing</printable>
// </asnOctets>
// </sequence>
// <sequence>
// <oid>2.5.29.17</oid>
// <asnOctets>
// <sequence>
// <contextSpecific tag="4" constructed="1">
// <sequence>
// <set>
// <sequence>
// <oid>2.5.4.4</oid>
// <utf8>334623324234325</utf8>
// </sequence>
// </set>
// <set>
// <sequence>
// <oid>0.9.2342.19200300.100.1.1</oid>
// <utf8>310122393500003</utf8>
// </sequence>
// </set>
// <set>
// <sequence>
// <oid>2.5.4.12</oid>
// <utf8>0000</utf8>
// </sequence>
// </set>
// <set>
// <sequence>
// <oid>2.5.4.26</oid>
// <utf8>Sample E</utf8>
// </sequence>
// </set>
// <set>
// <sequence>
// <oid>2.5.4.15</oid>
// <utf8>Sample Business</utf8>
// </sequence>
// </set>
// </sequence>
// </contextSpecific>
// </sequence>
// </asnOctets>
// </sequence>
// </sequence>
// </set>
// Use this online tool to generate code from sample XML:
// Generate Code to Create XML
// Here's the code to generate the above extension request.
let xml = chilkat::Xml::new();
xml.set_tag("set");
xml.update_child_content("sequence|sequence|oid", "1.3.6.1.4.1.311.20.2");
xml.update_child_content("sequence|sequence|asnOctets|printable", "ZATCA-Code-Signing");
xml.update_child_content("sequence|sequence[1]|oid", "2.5.29.17");
let _ = xml.update_attr_at("sequence|sequence[1]|asnOctets|sequence|contextSpecific", true, "tag", "4");
let _ = xml.update_attr_at("sequence|sequence[1]|asnOctets|sequence|contextSpecific", true, "constructed", "1");
xml.update_child_content("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set|sequence|oid", "2.5.4.4");
xml.update_child_content("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set|sequence|utf8", "334623324234325");
xml.update_child_content("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[1]|sequence|oid", "0.9.2342.19200300.100.1.1");
xml.update_child_content("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[1]|sequence|utf8", "310122393500003");
xml.update_child_content("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[2]|sequence|oid", "2.5.4.12");
xml.update_child_content("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[2]|sequence|utf8", "0000");
xml.update_child_content("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[3]|sequence|oid", "2.5.4.26");
xml.update_child_content("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[3]|sequence|utf8", "Sample E");
xml.update_child_content("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[4]|sequence|oid", "2.5.4.15");
xml.update_child_content("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[4]|sequence|utf8", "Sample Business");
// Add the extension request to the CSR
let _ = csr.set_extension_request(&xml);
// Generate the CSR with the extension request
let Ok(csr_pem) = csr.gen_csr_pem(&priv_key) else {
println!("{}", csr.last_error_text());
return;
};
println!("{}", csr_pem);
// Sample PEM output:
// -----BEGIN CERTIFICATE REQUEST-----
// MIICEjCCAbkCAQAwgZcxITAfBgNVBAMMGG15c3ViZG9tYWluLm15ZG9tYWluLmNv
// bTELMAkGA1UEBhMCR0IxDjAMBgNVBAgMBVlvcmtzMQ0wCwYDVQQHDARZb3JrMSEw
// HwYDVQQKDBhJbnRlcm5ldCBXaWRnaXRzIFB0eSBMdGQxIzAhBgkqhkiG9w0BCQEW
// FHN1cHBvcnRAbXlkb21haW4uY29tMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE
// g8EVNSV0ttlM9kG2E+J3ZB9WEDYVf2QA/8idrPRUafia1CHjd1kslwZA8eP2bAcf
// 2O493QAENqtW6DTHJbRz8KCBvjCBuwYJKoZIhvcNAQkOMYGtMIGqMCEGCSsGAQQB
// gjcUAgQUExJaQVRDQS1Db2RlLVNpZ25pbmcwgYQGA1UdEQR9MHukeTB3MRgwFgYD
// VQQEDA8zMzQ2MjMzMjQyMzQzMjUxHzAdBgoJkiaJk/IsZAEBDA8zMTAxMjIzOTM1
// MDAwMDMxDTALBgNVBAwMBDAwMDAxETAPBgNVBBoMCFNhbXBsZSBFMRgwFgYDVQQP
// DA9TYW1wbGUgQnVzaW5lc3MwCgYIKoZIzj0EAwIDRwAwRAIgF7D30eSBklfo+oel
// 1B0z64eJDB9MB3rCoiFZlj+mz0YCIHYI87eyqdtw2LOcAoBRhyxlBT6i28+Z/8t9
// bYsMIYvp
// -----END CERTIFICATE REQUEST-----